https://doi.org/10.1140/epjs/s11734-022-00446-4
Review
Composite dynamics and cosmology: inflation
1
Department of Physics, Faculty of Science, Khon Kaen University, 40002, Khon Kaen, Thailand
2
College of Graduate Studies, Walailak University, 80160, Nakhon Si Thammarat, Thailand
3
School of Science, Walailak University, 80160, Nakhon Si Thammarat, Thailand
4
Research Group in Applied, Computational and Theoretical Science (ACTS), Walailak University, 80160, Nakhon Si Thammarat, Thailand
Received:
6
October
2020
Accepted:
13
January
2022
Published online:
29
January
2022
In this work, we review the composite dynamics in various models which can be efficiently used to study the mechanism of cosmic inflation. In the framework of single-field inflationary models, we consider the inflaton field emerging as a bound state stemming solely from the underlying fermionic degrees of freedom in various composite theories. Moreover, we constrain the number of e-foldings for composite models of inflation to obtain successful inflation and satisfy the observational data from Planck 2018, simultaneously. In addition, a set of cosmological parameters, e.g., the primordial spectral index 
and tensor-to-scalar ratio r, is constrained using the results reported by Planck 2018.
Special issue: Review of Fundamental Composite Dynamics. Guest editors: K. Sridhar, Giacomo Cacciapaglia, Aldo Deandrea.
© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2022
